AGROEKOSISTEM KOPI BERKELANJUTAN YANG MEMPERTAHANKAN KERAGAMAN BAKTERI TANAH
Shade trees in coffee agro-ecosystems provide ecological benefits such as soil conservation, biodiversity, nutrient cycling through litter fall, and N fixation by nodules of legume shade trees. Soil bacteria as part of belowground biodiversity plays an important role on ecosystem functioning. The ai...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2011
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/90245/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=52580 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Shade trees in coffee agro-ecosystems provide ecological benefits such as
soil conservation, biodiversity, nutrient cycling through litter fall, and N fixation
by nodules of legume shade trees. Soil bacteria as part of belowground
biodiversity plays an important role on ecosystem functioning. The aim of this
research was to examine coffee agro-ecosystems with high sustainability index
that sustain soil bacteria diversity. The research was conducted through survei and
experimental petak of coffee agro-ecosystems, at benchmark site of Conservation
and Sustainable Management of Below-Ground Biodiversity (CSM-BGBD), in
Sumberjaya Subdistrict, West Lampung, Indonesia, during 2007-2010. Types of
coffee agroecosystems to be examined were Coffea canephora with shade trees of
Gliricidae sepium, Erythrina sububrams, Michelia champaca, and sun coffee
(without shade tree). Two plots were 4-5 years old coffee plot and a quassy
experiment plot of 15-16 years old coffee. Diversity of soil bacteria was evaluated
based on C source and DNA finger printing of total soil bacteria and legume
nodulating bacteria. Sustainability of coffee agroecosystems was assessed based
on ecological variables and economic reliability.
The main conclusion of the research was that legume shaded coffee agroecosystems
had high sustainability indeces and able to sustain soil bacteria
diversity. The detail conclusions were: (1) Landuse change from forest to
agroecosystems decrease diversity of soil bacteria. Coffee agro-ecosystems were
able to sustain soil bacteriadiversity |
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